Chuck.



L. E. WHITON.

APPLICATION FILED SEPT. 28,-1907.

Patented Aug. 9',

' INVENTOR- LUCIUS E. WHITON, OF NEW LONDON, CONNECTICUT.

CHUCK.

Specification of Letters Patent.

Patented Aug. 9, 1910.

Application filed September 28, 1907. Serial No. 394,958.

To all whom it may concern:

Be it known that I, Lucius E. WHITON, a citizen of the United States,residing at New London, in the county of New London and State ofConnecticut, have invented certain new and useful Improvements inChucks, of

j which the following is a specification.

My invention relates to improvements in chucks and particularly forholding work during boring operations.

The main object is to hold work, especially long pieces, securely.

The invention consists in a chuck having special jaws and means forailjustably supin size as at 6 and a collar 7 surrounds them,

. the jars.

plementing their .clamping action at their other ends.

Figure 1, is a side view of a chuck of my invention with work in place.Fig. 2, is a fragmentary face view of the same. Fig. 3,

is a fragmentary detail of the cndof a jaw.

The invention, is shown as particularly adapted to anindependentjawedchuck having body 1, and aws 2', 2, 2, adjustable as is customary.Each jaw has two gripping portions 3 and l, the 'latter being somewhatremote from the former, so that the work 5 is grasped at two pointsquite a distance apart.

This gives a steady support for the work which prevents chattering.

Preferably theend of each jaw is reduced all. This collar carries clampscrews 8, 8, which set up against the jaw ends for drawing them snu lyagainst the work. The collar is prefera fily angular in form so that theportions between the clamp screws constitute substantially straight,inflexible tie rods. The collar abuts against the shouldcrs 9, 9 ofWVhen work is being put in the chuck, the jaws are first set up by thecustomary method so as to centerit .properly. The clamp screws 8, 8, arethen set up so .as to more securely center the outer end of the work andprevent the jaws from bending. The work is thus held by a sort of truss,which consists of the chuck body and the collar and the longitudinalmembers orjaws.

The work is'removed by an operation, the reverse of that abovedescribed.

What I claim is:

1. In a chuck construction, a body, a plurality of .jaws adjustablycarried thereby and each having two gripping surfaces lon gitudinallyspaced apart and independent means for adjusting the inner and outerends of said jaws.

2. A chuck construction, conslstmgof a body, a plurality ofindependently adjust-' able aws each having two gripping surfaces remotefrom each other, and means for individually clamping the ends 'of thejaws against the work.

' A chuck comprising a body, a plurality of adjustable jaws, a collarand independent clampingscrews carried by said collar and coactin g withthe diiferent jaws.

4:. A chuck comprising a body and jaws-- adjustable therein, each havinga gripping surface near the body and an extension with a grippingsurface remote from the body, and a collar surrounding the ends oftheextensions and clamping. the same.

5. A chuck comp rising,.a body and a plurality of rigid jaws adjustabletherein, each surface adjacent the chuck body and a second grippingsurface remote from the first and in substantial longitudinal alinementtherewith and means for clamping the "outer ends of the jaws.

6. A chuck comprising a body, a plurality of radially adjustable jawscarried thereby an angular collar surrounding said aws and clampingscrews pro ectmg Into the interior angles of said collar and co-actingwith the several jaws.

-7. 'A chuck comprising a body, a plurality of adjustable jaws carriedthereby and each" having its end cut away to form a seat and a shoulder,a collar surrounding the seats of and co-acting with the seats of saidjaws for the purpose specified.

.said jaws and abutting against said shoulders and clamp screws carriedby said collar In testimony whereof I affix my signature I in presenceof two witnesses. v

LUCIUS; E. WHITON.

, Witnessesi I L. G. STEBBINS, J. H. GUMBLE.

75 jawbeing integral and having a gripping

